Concrete-reinforcing plate.



A RATNEIL CONCRETE REINFORCING PLATE. APPLICATION FILED NOV. 22. 1916:

Patented Ocfc. 2; 1917.

. k /m w AB RATHER, OF NEW YORK, N. Y.

concanrnanmroncmc PLATE.

maaose.

Specification of Letters Patent.

Patented Oct. 2, 191?.

Application filed November 22, 1916. Serial No. 132,779.

ribbed and channeled plates which are embedded in plastic material, such as concrete, "to bind layers of it together and reinforce it when it is made into walls and analogous formations many of which it is desirable to have thm as well as strong. The main objects and advantages'of the invention will be explainedin the following description of the plate in which it is embodied, and of different ways in which such plates may be used. The invention consists of the ribbed and channeled reinforcing plate which is hereinafter described and particularly de- 'fined in the claims. On the accompanying sheet of drawings, on which like reference-numerals designate like parts of different views:

Figure 1 is a perspective view of are 80 inforcing plate, or part of such a plate, em-

bodying the invention in its preferred form; Fig. 2, an edge view of a fragment of. a wall composed of concrete with reinforcing plates embedded therein;-

Fig. 3, an ed e view of a fragment of a flight of stairs ormed of concrete in which angulated reinforcing plates are embedded;

Fig. 4, a front view of a fragment of the.

staircase;

Fig. 5, a top view of a column composed of concrete and angulated reinforcing plates;- and a Fig. 6, a perspective of a fragment of a partly constructed wall comprising outer as and inner reinforcing plates, some of which are angulated.

A reinforc' plate embodying the invention is best to e made of .thin'sheet-met which may be either-plain or crim ed, and

either black or galvanized. To cm the plate the sheet-metal is subjected tobending operations by which groups of hollow ribs are formed from it so that unribbed portions, flat or in some cases curved, alternate with the cups of ribs. Each 11.n-

ribbed portion is, or usually would better even' where the ribs are faces .of the wall. There t e metal surfaces be, of greater width than a group of ribs, which are ternate, or in other words arranged in groups of three ribs each.

. The plate represented by Fig. 1 has ternate hollow ribs of suitable shape, andthe flat um'ibbed portions 1 alternating with .the groups of ribs. Each of the groups is composed of the ribs 2, 3 and 4, the central rib 2 being twice as deep as the others. Eachof the lateral walls of the deep rib 2 of any plate forms a lateral wall of one of the shallow ribs of that group, which spring from thesides of the deep rib and from the unribbed portions of the plate which are adjacent to the group, so that the channel 5 of the deep rib extends between the channels 6 and 7 of the shallow ribs. The ribs of a plate might differ some what in shape from the dovetail ribs shown,

but the shape of each rib is to be such that the walls of the channel in the rib shall diverge as they recede from the open side of the rib. The open sides of the shallow ribs 3 and 4 of each group are at one side ofthe plate and even with the adjacent unribbed portions 1, and. the open side of the deep rib 2 is at the other side of the plate.

Although the, deep rib might be more or less than twice as deep as the shallow ribs, the relations between the groups of ribs andthe unribbed portions preferably are such that each. group of ribs is cut from end to end midway betweeh its front and back by the adjacent unribbed portion or portions produced through the group. I p

The wall represented by the fragment shown in Fig. 2 is com osed of layers 8 and 9 of concrete forme on and engaged with reinforcing plates like that shown in Fig. 1. The width of this fragment is less than that of an entire plate, and includes only a part of one plate. The layer 8 fills the channels of the shallow ribs 3 and 4 and covers the-deep ribs 2, and the layer 9 fills the channels of-the deep ribs and covers the shallow rib so that each layer is ens gaged with and drmly attached to the plate, f the unribbed portions 1 being in the middle 1 05 of the wall.- The thickness of the concrete "is such, next to the unribbed portions ,1, and

between the face of each layer and the bottoms of the channels which it fills, that the concrete cannot separate from the plate, uiteclose to the with which' the concrete makes qontactam so small and the thin portions of the concrete which cover them are so narrow and so held at their edges by the thick portions adjacent to them, that they will not draw away from the ribs. These ternate hollow ribs, filled with concrete as shown, are es sentially strong and stiif columns, each of which is composed of sections firmly united from top to bottom of the column. These columns not only increase the rigidity of the Wall but also render it capable of supporting great weight.- Such a wall, when it forms a thin partition, will be found to be firmer and more durable than thicker walls of reinforced concrete, as they are commonly made. The width of the un ribbed portions 1 of the plate may be.

of the deep ribs shall be at the angle, the

open side of the rib being at theinner side of the angle, or by bending unribbed portions of the plate as is also indicated in Fig. 3. When a plate is angulated as shown in Figs. 5 and 6, the forms of the shallow ribs close to the angle and the form of the p deep rib at the angle differ somewhat from 35.

their original forms. The layers 10 and 11 of concrete which constitute the front and back of the stairs (Fig. 3) are attached to and bound together by the reinforcing plates, substantially as are the layers 8 and 9 of the wall above described. The stairs may be connected to the walls 13 and 14 of the staircase by supporting rods 12 extending through deep. ribs of the reinforcing plates and secured at their ends in the walls, as illustrated in Fig. 4.

The reinforcing plates of the column (Fig. 5) are interlocked as shown at 15 and 16. They form a case in which the central concrete portion 17 of the column may be-molded, and which may be covered with a layer 18 of concrete or other plastic material, so that the central portion 17 and portion of the outer facing 19 of the wall is shown at the bottom of Fig. 6. The outer and inner plates may betemporarily held in proper positions by cross-bars extending into andengaging with ribs of the plates.

It will be understood that the invention may be embodied in plates having groups of ribs differing more or less in form from those shown in the drawings ofv this .application.

Having thus described my invention, what i I claim as new and desire to secure by Letters Patent, is:

i 1. A reinforcing plate having ternate hollow ribs, and unribbed portions alternating .with the groups of ribs, the walls of the three ribs of each roup forming three open channels one ofw ich is deeper than andextends between the others and said walls including parts capable'of continuously engaging fillings of hardened plastic material at opposite sides and from end to end of each filling, and thus coactiilg withthe fillings in producing a column composed of sections.

firmly united from top to bottomofthe column.

2. A reinforcing plate having ternate hollow ribs, and unribbed portions alternating with the groups of ribs, one rib of each group being deeper than. the others, the

open sides of the two shallow ribs of each group being at one side of the plate and the open side of the deep rib being at the 'other side of the plate, and the plate being angulated and having one of the deep ribs at the angle, the open side of that rib being i at the inner side of the angle.

ABRAHAM. RATNER. 

